Measure the distance along each side of the oven - from the top to bottom edge of the cabinet cutout. Note the measurements on the reference sheet. If you can, measure depth of the cabinet cutout from the front edge to the back wall.
Antidisestablishmentarianism is a splendid example of a word that people enjoy for some reason other than its ostensibly intended use; they like it because it is a very long word. Merriam-Webster does not define the word, on the grounds that very few people (if any) ever use it, except as an example of a long word.
Definition of ANTISEPTIC. 1. a: opposing sepsis, putrefaction, or decay; especially: preventing or arresting the growth of microorganisms (as on living tissue) b: acting or protecting like an antiseptic.2. : relating to or characterized by the use of antiseptics.: opposing sepsis, putrefaction, or decay; especially: preventing or arresting the growth of microorganisms (as on living tissue) b: acting or protecting like an antiseptic.